Mucin-1/MUC1 protein and its α subunit have dual functions of adhesion and anti-adhesion proteins, forming a protective layer on epithelial cells. At the same time, the β subunit and its C-terminal domain participate in cell signaling through phosphorylation and protein-protein interactions. Mucin-1/MUC1 Protein, Human (HEK293, mFc) is the recombinant human-derived Mucin-1/MUC1 protein, expressed by HEK293 , with C-mFc labeled tag.